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is a borough in Allegheny and Washington counties in the U.S. state of Pennsylvania, 18 miles (29 km) southwest of Pittsburgh. In the past, manufactories of bottles, oil-well drilling tools, flour-mill products, etc., existed here. Oil and coal were and still are procured extensively in the area. In 1900, 2,475 people lived here, and in 1910, 2,543 people lived here. The population was 2,281 at the 2000 census. McDonald was also the home of NFL coaches Marvin Lewis and Marty Schottenheimer, Oscar-winning songwriter Jay Livingston and his brother Alan Livingston, former President of Capitol Records.
McDonald's government includes an elected mayor, an elected seven-member borough council and an appointed secretary-treasurer. The borough's tax collector is also elected. The mayor, council members and tax collector are all elected to four-year terms. All of the council seats are at-large.
According to the United States Census Bureau, the borough has a total area of 0.5 square miles (1.3 km²).None of the area is covered with water.